Hydrodynamic coupling arrangement

Abstract

A hydrodynamic coupling arrangement has a housing connected to pressure medium lines for conducting pressure medium into or out of a pressure space sealed by a piston of a clutch device relative to a toroidal space of a hydrodynamic circuit provided in the housing. A rotatable area is provided for axially displaceably receiving a radially inner piston hub of the piston of the clutch device, and at least one through-opening which is rotatable relative to the housing is provided in a through-opening area for producing at least one flow connection between at least one pressure medium line and the pressure space. The receiving area and the through-opening area are in rotational communication with a retarding device influencing a flow of pressure medium in the pressure space, this flow of pressure medium arriving in the pressure space after passing through the through-opening area.

The invention claimed is: 
     
       1. A hydrodynamic coupling arrangement comprising:
 a piston of a clutch device configured to substantially seal at least one pressure space relative to a toroidal space of a hydrodynamic circuit; 
 pressure medium lines for conducting a pressure medium into or out of the at least one pressure space; 
 a housing connected to the pressure medium lines; 
 a receiving area rotatable relative to the housing and configured to axially displaceably receive a radially inner piston hub of the piston of the clutch device; 
 at least one through-opening rotatable relative to the housing is provided in a through-opening area for producing at least one flow connection between at least one pressure medium line and the at least one pressure space; and 
 a retarding device that is rotationally fixed to the receiving area and the through-opening area and configured to influence a flow of pressure medium in the at least one pressure space, 
 wherein the flow of pressure medium arrives in the at least one pressure space after passing through the through-opening area, 
 wherein the retarding device has a swirl blading provided with at least one swirl blade that at least substantially extends radially outward into the at least one pressure space. 
 
     
     
       2. The hydrodynamic coupling arrangement according to  claim 1 , wherein the at least one swirl blade of the swirl blading is received so as to be fixed with respect to relative rotation at a supply hub or at a blade hub received by the supply hub so as to be fixed with respect to rotation relative to it. 
     
     
       3. The hydrodynamic coupling arrangement according to  claim 2 , wherein the receiving area and/or the through-opening area is provided at the supply hub or at the blade hub. 
     
     
       4. The hydrodynamic coupling arrangement according to  claim 2 , wherein the swirl blading has a blade carrier, wherein in order to form the at least one swirl blade at least one blade carrier segment which is separated from the blade carrier by clearance machining is made to emerge with at least one component in axial direction relative to one of end faces of the blade carrier. 
     
     
       5. The hydrodynamic coupling arrangement according to  claim 4 , wherein the blade carrier, adjoining a blade carrier segment in circumferential direction in each instance, is provided with a radial cutout extending radially inward from a circumferential area. 
     
     
       6. The hydrodynamic coupling arrangement according to  claim 4 , wherein the blade carrier is fastened to the supply hub. 
     
     
       7. The hydrodynamic coupling arrangement according to  claim 4 , wherein the at least one swirl blade deviates from a radial direction with an inclination opposite to its rotational direction or with an inclination corresponding to its rotational direction. 
     
     
       8. The hydrodynamic coupling arrangement according to  claim 2 , wherein the swirl blading has a blade carrier, wherein in order to form the at least one swirl blade at least one blade carrier segment is made to emerge by plastic shaping of the blade carrier relative to an end face of one of its end faces. 
     
     
       9. The hydrodynamic coupling arrangement according to  claim 8 , wherein the blade carrier of the swirl blading has at least one through-pass opening in circumferential direction, the at least one through-pass opening extending axially between the end faces of the swirl blading. 
     
     
       10. The hydrodynamic coupling arrangement according to  claim 8 , wherein the at least one swirl blade deviates from a radial direction with an inclination opposite to its rotational direction or with an inclination corresponding to its rotational direction. 
     
     
       11. The hydrodynamic coupling arrangement according to  claim 2 , wherein the blade hub of the swirl blading is formed in one piece with the at least one swirl blade hub. 
     
     
       12. The hydrodynamic coupling arrangement according to  claim 2 , wherein at least one swirl blade is fastened to the blade hub of the swirl blading. 
     
     
       13. The hydrodynamic coupling arrangement according to  claim 1 , further comprising axial retainers for the at least one swirl blade that act in opposite directions relative to one another and are associated with the swirl blading. 
     
     
       14. The hydrodynamic coupling arrangement according to  claim 1 ,
 wherein the housing is rotatable about a central axis, 
 wherein the at least one swirl blade extends with at least one of: 
 at least one component radial to the central axis, and 
 at least one component in axial direction, which is an extension direction of the central axis. 
 
     
     
       15. The hydrodynamic coupling arrangement according to  claim 14 , wherein the at least one swirl blade is formed in radial direction and/or in axial direction at least substantially without curvature. 
     
     
       16. The hydrodynamic coupling arrangement according to  claim 15 , wherein the at least one swirl blade is formed so as to be inclined in radial direction. 
     
     
       17. The hydrodynamic coupling arrangement according to  claim 16 , wherein the at least one swirl blade deviates from a radial direction one of:
 with an inclination opposite to its rotational direction or 
 with an inclination corresponding to its rotational direction. 
 
     
     
       18. The hydrodynamic coupling arrangement according to  claim 15 , wherein the at least one swirl blade is formed so as to be inclined relative to axial direction. 
     
     
       19. The hydrodynamic coupling arrangement according to  claim 14 , wherein the at least one swirl blade is formed in radial direction and/or in axial direction with curvature. 
     
     
       20. The hydrodynamic coupling arrangement according to  claim 19 , wherein the at least one swirl blade is formed so as to be inclined in radial direction. 
     
     
       21. The hydrodynamic coupling arrangement according to  claim 19 , wherein the at least one swirl blade is arranged so as to be inclined relative to axial direction. 
     
     
       22. The hydrodynamic coupling arrangement according to  claim 1 , wherein the at least one swirl blade is formed in one piece with a supply hub. 
     
     
       23. A hydrodynamic coupling arrangement comprising:
 a piston of a clutch device configured to substantially seal at least one pressure space relative to a toroidal space of a hydrodynamic circuit; 
 pressure medium lines for conducting a pressure medium into or out of the at least one pressure space; 
 a housing connected to the pressure medium lines; 
 a central axis around which the housing is rotatable; 
 a receiving area rotatable relative to the housing and configured to axially displaceably receive a radially inner piston hub of the piston of the clutch device; 
 at least one through-opening rotatable relative to the housing is provided in a through-opening area for producing at least one flow connection between at least one pressure medium line and the at least one pressure space; and 
 a retarding device that is rotationally fixed to the receiving area and the through-opening area and configured to influence a flow of pressure medium in the at least one pressure space, 
 wherein the flow of pressure medium arrives in the at least one pressure space after passing through the through-opening area, 
 wherein at least one through-opening outlet of at least one through-opening of the through-opening area extends farther outward radially with respect to the central axis than an inner diameter of a radially inner piston hub of the piston, the inner diameter surrounding the receiving area.